Sad-iron.



CARL E. SHIELDS, OF ROCK ISLAND, ILLINOIS.

sap-mow.

Specification of Letters Patent.

Patented Sept. 26, 1916.

Application filed May 9, 1914. Serial No. 837,362.

To (ZZZ whom it may concern Be it known that I, CARL E. SHIELDS, acitizen of the United States of America, and resident of Rock Island,Rock Island county, Illinois, have invented a certain new and usefulImprovement in Sad-Irons, of which the following is a specification.

My invention relates to sad irons of that type which are heatedinternally by jets of flame and has for its principal object to providea simple and improved structure in which the air chambers and air ductsare of the fewest possible number and of a character, in theirsimplicity of form, to greatly reduce the cost of manufacture, byavoiding the excessive loss always incident to intricately coredcastings.

Another object is to so form the air chamber and connect the air ductsthereto in a manner to insure an abundant supply of air to the body ofthe iron and to be diffused therein in a manner to promote and supportproper combustion.

These and other objects which will hereinafter appear I accomplish bythe structure shown in the accompanying drawings in which,

Figure I is a perspective view of my improved sad iron, Fig. II is aside elevation partly in section, Fig. III is an enlarged top plan viewwith the cover removed, Fig. IV is a cross section taken on line AB ofFig.

III. Fig. V is a cross section taken on line CD of Fig. I.

Similar reference numerals refer to similar parts throughout the severalviews.

The iron can be made of any standard or desired form of outline andconsists of the usual hollow body portion, a top plate orv cover towhich is secured a handle, and the burner pipe entering the hollow body.

My invention is directed more especially to the manner of introducingthe fuel gas and air into the iron whereby perfect combustion is inducedand maintained, producing a constant jet of blue flame at each opening'in the burner pipe and which will not be aifected by the usual jerkyaction to which irons are commonly subjected when in ordinary use. Aninsuflicient quantity of air, sluggish circulation, coupled with animproper distribution thereof relative to the incoming gas, develop whatare commonly termed floating jets, that is the flame at each orifice inthe burner pipe is not constantit is intermittentgoing out and relighting, thus permitting the constant escape of unburned gas, resultingseriously to the operator, especially if the iron is being used in aclosed room. To insure a suffic1 ent quantity, free circulation andproper distribution of air in the simplest possible manner, I providethe usual hollow body portion 1 of the iron with the extra thick bottomor floor 2 and the usual vertical sides 3. A plaln, straight, roomy,rectangular air chamber 4 is cored out centrally of the floor throughoutits length at the longest part thereof, the forward end being closed andterminating in the point of the body of the 1IOI1, while the rear endpierces the rear wall and is open to the atmosphere. The upper wall ofthe channel is provided with the slot 4? extendingthroughout its lengthand opening into the body 1. Radiating from the side walls of thechannel at both sides thereof, and preferably at an angle there to, arethe air-ducts 4 extending through the thick bottom or floor 2 to theoutside. The points of communication of these air-ducts with the channel4 are equally spaced along its length, thus insuring a full and constantflow of air through slot P throughout its length. By locating thevertical walls of these air-ducts in a slanting position relative to thechannel 4: they function as deflectors, reducing the tendency of theflames from the burner reaching out therethrough and scorching thematerial being ironed. When these air ducts'are located at right anglesto the channel, it has been found that the flame very easily and veryfrequently reaches out-beyond the sides of the iron, but when placedslantingly the tendency for the flame to so reach out is greatlychecked. By slanting some in one direction and others in the oppositedirection an inflow of air is induced regardless of the direction inwhich the iron is being moved by the operator. The sides and rear wallsof the body of the iron are cut away at their upper edges as shown at 5and 6. The cover 7 is secured to the top of the body by screws 7 or inany other suitable manner, and to the cover is secured the usual handle8.

' Above the opening of channel A in the rear wall of the body portion isthe centrally located opening 9 through which the burner pipe 10 passes.This pipe extends entirely across the hollow body of the iron and issecurely screwed into the forward wall, closing the end thereof.Immediately outside of the of a Bunsen burner, for the reception of arubber hose or gas tube. The pipe is further secured in proper position,relative to the body of the iron, and prevented from turning by the setscrew 11 locatedin the 1 bottom of the screw hole provided for the coverscrew 7 ;This burner-pipe 10 is 5120- sitioned a suitable distance abovethe floor 2 and is provided with a. series of openings orwjets 12throughout its length, near the bottom and on veachside ot' thediametrical center thereof.

To the under side of the lid or cover 7 is secured the ba'illeordeflector 13. This deflector is made of a singlepiece of metal andconsists ofthe horizontal portion 13 from which,.by proper slitting andpunching, are formed the downwardly and outwardlyextendingwings 13". Thedeflector-is secured to the underside of the cover by the same boltsthat fasten the handle 8 thereto. It is separated a suitable distancetroimthe cover byjthe fillers 13. It is so positioned relative to theinterior of the body of theiron that the free edges of the downwardlyand outwarjdly extendingwings come in close proximityto the side wallsand floor, as shown in dotted'lines in-Fig. IV, so that the heat arisingfronr the burner :and floor .is defiected toward'the center of the-ironfrom which point it rises and escapes from the outlets 5 and 6, throughcontact with thehorizontalportion of the, deflector. The heat is'thuskept: from contacting the cover di-v rect, keeping it comparatively cool.to the comfort of theoperator. In thus bafliing orobstructingtheoutflowing heated air more heat units are given up andutilized in heating and keeping hot the thickefloorof the iron,resulting in marked economy in consumption of fuel.

Thus described, it is seen I provide a sad iron in the heavy bottom ofwhich is a plain rectangular passage or channel extending-longitudinallythereof and having communication with the interior of thebody of the iron through an unbroken narrow slot extending practicallythe entire length of the channel' Through the open end of the chan-Gopies lot-this patent may be obtained-for nel and the numerouslaterally and slantingly extending ports or air ducts tapping thechannel at regular intervals throughout a base, :an' air channelarranged centrally. and longitudlnally wlthin said base, said .811

channel being closed at its forwa-rdiend and open to the atmosphereattheother end, and horizontal air-passages in said basear rangedobliquely to andextending laterally, from said airchannel outthrough-the sides of said base.

2A sad iron comprising a hollow body, a burner pipe provided withlateralopen ings, longitudinally and centrally positioned in said body,a cover for said body, a ,de-

fiector providedwith lateral openings in the upper portion secured tothe underside of said-cover and extending downwardly and outwardlyto apointrin closeproximityto the floor and side walls. of said hollow body.

3. A sad iron comprising a hollow body, a cover. suitably. secured tosaid body, a deflector consisting of a horizontalportion and integral.wings bending downwardly and outwardly theretrom,saidwings havingupturned portionsform-inglateralopenings in thenpper POI'tlOIl thereof,a burner pipe passlng longitudinally through said hollow bodyandrpositioned beneath the horizontal portion of said deflector and.betweenithe wingsrthereof.

Signed by me at Rock Island, Illinois, this 7th day of May, 1914.

CARL. E. SHIELDS. Witnesses J. WV; GRAHAM, IV. G-Es'r,

five cents eachyby addressing the :Gommissioner. of, Patent:.Washingtomh G.

